\begin{tikzpicture}
	\tkzDefPoints{0/0/A, 1.5/1.2/B, 4/0/C}

	\tkzDrawLines[add=0.3 and 0.3](A,B  A,C  B,C)

	\tkzLabelPoints[below](A,C)
	\tkzLabelPoints[above](B)
\end{tikzpicture}

